含PLA-PEG-PLA三嵌段共聚物的PLA中空纤维的制备及其性能研究  

Study on the Preparation and Properties of PLA Hollow Fiber Containing PLA-PEG-PLA Triblock Copolymers

作　　者：沈鹏[1] 张玉坤[2] 许嘉瑛[1] 陈顺权[1] 杜如虚[1] 

机构地区：[1]广州中国科学院先进技术研究所水科学研究中心,广东广州511458 [2]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《塑料工业》2013年第2期24-27,39,共5页China Plastics Industry

摘　　要：合成制备了聚乳酸-聚乙二醇-聚乳酸三嵌段共聚物(PLA-PEG-PLA)三嵌段共聚物,并用NMR和GPC对其进行了表征。将PLA-PEG-PLA作为亲水性添加剂用于中空纤维的制备,并研究了PLA-PEG-PLA的加入对中空纤维性能的影响。结果发现:PLA-PEG-PLA和PLA有很好的相容性,而且PLA中空纤维的抗污性能明显得到改善。随着PLA-PEG-PLA用量的增加,中空纤维的透水量逐渐下降,牛血清白蛋白(BSA)阻止率逐渐增加。PLA-PEG-PLA triblock copolymers were synthesized, and characterized by NMR and GPC. PLA-PEG-PLA triblock copolymers were put into hollow fiber membrane as additives, and studied the influence on the properties of hollow fiber. The results showed that PLA-PEG-PLA and PLA had well compatibility, and fouling resistance of PLA hollow fiber was improved significantly. With the increase of the concentration of PLA-PEG-PLA, water permeability of hollow fiber declined gradually, while BSA rejection increased.

关 键 词：聚乳酸 聚乳酸-聚乙二醇-聚乳酸三嵌段共聚物 中空纤维 透水量 抗污性能 

分 类 号：TQ340.6[化学工程—化纤工业]